Объяснение:
a)
2Ca + O₂ = 2CaO
CaO + H₂O = Ca(OH)₂
Ca(OH)₂ + 2HCl = CaCl₂ + 2H₂O
3CaCl₂ + 2Na₃PO₄ = Ca₃(PO₄)₂↓ + 6NaCl
б)
2Cu + O₂ = 2CuO
CuO + H₂SO₄ = CuSO₄ + H₂O
CuSO₄ + 2KOH = Cu(OH)₂↓ + K₂SO₄
Cu(OH)₂ =t°= CuO + H₂O
CuO + H₂ = Cu + H₂O
а)2Ca+O2=2CaO
CaO+H2O=Ca(OH)2
Ca(OH)2+ZnCl2=CaCl2+Zn(OH)2
3CaCl2+2H3PO4=Ca3(PO4)2+6HCl
б)2Cu+O2=2CuO
CuO+SO3=CuSO4
CuSO4+2NaOH=Cu(OH)2+Na2SO4
Cu(OH)2=CuO+H2O
2CuO=2Cu+O2
Объяснение:
a)
2Ca + O₂ = 2CaO
CaO + H₂O = Ca(OH)₂
Ca(OH)₂ + 2HCl = CaCl₂ + 2H₂O
3CaCl₂ + 2Na₃PO₄ = Ca₃(PO₄)₂↓ + 6NaCl
б)
2Cu + O₂ = 2CuO
CuO + H₂SO₄ = CuSO₄ + H₂O
CuSO₄ + 2KOH = Cu(OH)₂↓ + K₂SO₄
Cu(OH)₂ =t°= CuO + H₂O
CuO + H₂ = Cu + H₂O
а)2Ca+O2=2CaO
CaO+H2O=Ca(OH)2
Ca(OH)2+ZnCl2=CaCl2+Zn(OH)2
3CaCl2+2H3PO4=Ca3(PO4)2+6HCl
б)2Cu+O2=2CuO
CuO+SO3=CuSO4
CuSO4+2NaOH=Cu(OH)2+Na2SO4
Cu(OH)2=CuO+H2O
2CuO=2Cu+O2